{"id":223080,"date":"2022-08-02T22:43:00","date_gmt":"2022-08-02T22:43:00","guid":{"rendered":"\/forum\/forums\/reply\/223080\/"},"modified":"2022-08-02T22:43:00","modified_gmt":"2022-08-02T22:43:00","slug":"223080","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/223080\/","title":{"rendered":"Reply To: eigen modes of an air clad fiber"},"content":{"rendered":"<p>&lt;p&gt;Depending on your purpose, you can use Metal BCs to quickly get some lower order of modes, such as the fundamental mode. you can also use PML to get the only propgation modes. However, you may need to signifiantly increase the number of trial mdoes in order to get ride of PML modes (not shown). If yoy believe the mode number can reach 100, and you want all of the modes, you may need to use 200 or more for the trial modes.&lt;\/p&gt;&lt;p&gt;If you only need the modes with certain effective index, you can set the range of index, or begin from a certain index value (the result can be beyond this value).&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/08\/02-08-2022-1659480175-mceclip0.png\" \/>&lt;\/p&gt;&lt;p&gt;Please try and see if you can get sufficient number of modes.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-223080","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Depending on your purpose, you can use Metal BCs to quickly get some lower order of modes, such as the fundamental mode. you can also use PML to get the only propgation modes. However, you may need to signifiantly increase the number of trial mdoes in order to get ride of PML modes (not shown).\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/223080\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: eigen modes of an air clad fiber | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Depending on your purpose, you can use Metal BCs to quickly get some lower order of modes, such as the fundamental mode. you can also use PML to get the only propgation modes. 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However, you may need to signifiantly increase the number of trial mdoes in order to get ride of PML modes (not shown).\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2022\/08\/02-08-2022-1659480175-mceclip0.png\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/223080\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/223080\\\/#listItem\",\"name\":\"Reply To: eigen modes of an air clad fiber\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/223080\\\/#listItem\",\"position\":2,\"name\":\"Reply To: eigen modes of an air clad fiber\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/223080\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/223080\\\/\",\"name\":\"Reply To: eigen modes of an air clad fiber | Ansys Learning Forum\",\"description\":\"Depending on your purpose, you can use Metal BCs to quickly get some lower order of modes, such as the fundamental mode. you can also use PML to get the only propgation modes. 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However, you may need to signifiantly increase the number of trial mdoes in order to get ride of PML modes (not shown).","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/223080\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/223080\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","position":1,"name":"Home","item":"https:\/\/innovationspace.ansys.com\/forum","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/223080\/#listItem","name":"Reply To: eigen modes of an air clad fiber"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/223080\/#listItem","position":2,"name":"Reply To: eigen modes of an air clad fiber","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}}]},{"@type":"Organization","@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization","name":"Ansys Learning Forum","description":"Ansys Innovation Space","url":"https:\/\/innovationspace.ansys.com\/forum\/"},{"@type":"WebPage","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/223080\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/223080\/","name":"Reply To: eigen modes of an air clad fiber | Ansys Learning Forum","description":"Depending on your purpose, you can use Metal BCs to quickly get some lower order of modes, such as the fundamental mode. you can also use PML to get the only propgation modes. However, you may need to signifiantly increase the number of trial mdoes in order to get ride of PML modes (not shown).","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/223080\/#breadcrumblist"},"datePublished":"2022-08-02T22:43:00+00:00","dateModified":"2022-08-02T22:43:00+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/forum\/#website","url":"https:\/\/innovationspace.ansys.com\/forum\/","name":"Ansys Learning Forum","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Learning Forum | Ansys Innovation Space","og:type":"article","og:title":"Reply To: eigen modes of an air clad fiber | Ansys Learning Forum","og:description":"Depending on your purpose, you can use Metal BCs to quickly get some lower order of modes, such as the fundamental mode. you can also use PML to get the only propgation modes. 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